Too many link with status=1

[vagkarv]

Hi! I use apache-nutch-2.2.1 and for my database mysql. I run the crawl 
script and each time I check my database, I see that the number of links 
with status=1 are many more than the number of links  with 
status=2(=link successfully fetched) (~ 80%-10%). Does anyone know why I 
have so many links with status=1(= link unfetched); Can I improve that 
percentage so i can extract more information;